/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef HIVIEW_BASE_EVENT_EXPORT_BASE_HANDLER_H
#define HIVIEW_BASE_EVENT_EXPORT_BASE_HANDLER_H

#include <memory>
#include <variant>

namespace OHOS {
namespace HiviewDFX {
struct BaseRequest {
template <typename Derived>
static std::shared_ptr<Derived> DownCastTo(std::shared_ptr<BaseRequest> request)
{
    return std::static_pointer_cast<Derived>(request);
}
};
using RequestPtr = std::shared_ptr<BaseRequest>;

class ExportBaseHandler {
public:
    ExportBaseHandler() = default;
    virtual ~ExportBaseHandler() = default;

public:
    virtual bool HandleRequest(RequestPtr request) = 0;
    void SetNextHandler(std::shared_ptr<ExportBaseHandler> nextHandler)
    {
        nextHandler_ = nextHandler;
    }

protected:
    std::shared_ptr<ExportBaseHandler> nextHandler_;
};
} // namespace HiviewDFX
} // namespace OHOS

#endif // HIVIEW_BASE_EVENT_EXPORT_BASE_HANDLER_H